Contacts of the helix formed by residues 264 - 269 (chain F) in PDB entry 2NPP
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with ASN 264 (chain F).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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263F PRO* 1.3 75.7 - - - +
265F TYR* 1.3 66.2 + - - +
267F TYR* 2.6 49.4 + - - +
268F ARG* 3.3 9.4 - - - +
270F GLY* 3.0 31.9 + - - +
271F ASN* 3.0 21.4 + - - +
291F PRO* 4.3 19.3 - - + +
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Residues in contact with TYR 265 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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59F HIS* 3.0 51.8 + + + -
61F GLN* 3.4 12.8 - - - -
89F ARG* 3.3 16.5 + - + +
118F HIS* 4.8 0.2 + - - -
243F LEU* 3.9 4.7 - - + -
260F PHE* 3.6 25.4 - + + -
262F ALA* 3.5 12.6 - - + +
263F PRO 3.0 2.4 - - - -
264F ASN* 1.3 82.5 - - - +
266F CYS* 1.3 88.3 + - - +
267F TYR 2.8 5.5 + - - -
268F ARG 2.8 10.2 + - - -
269F CYS* 2.9 31.4 + - + +
271F ASN* 2.9 14.1 + - - +
6Y FGA 3.4 39.4 - - + +
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Residues in contact with CYS 266 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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107E GLU 5.3 0.7 - - - +
108E PHE* 5.1 1.0 - - - -
112E GLU* 5.6 2.1 - - - +
61F GLN* 3.1 8.4 + - - -
89F ARG* 3.7 31.1 - - + +
265F TYR* 1.3 115.5 - - - +
267F TYR* 1.3 78.5 + - - +
268F ARG* 3.3 12.0 + - + +
2Y LEU* 3.2 37.0 - - + -
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Residues in contact with TYR 267 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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107E GLU* 3.9 30.1 - - + -
108E PHE* 3.7 30.3 - + + -
60F GLY 4.3 0.2 + - - -
61F GLN* 3.8 34.6 - - + -
64F ASP* 4.6 2.2 - - - -
89F ARG 4.5 2.9 - - - -
90F GLY* 4.2 10.1 - - - -
91F TYR* 3.3 41.3 + - + +
92F TYR* 4.3 2.8 - - - -
263F PRO 5.4 0.7 - - - -
264F ASN* 2.6 41.3 + - - +
266F CYS* 1.3 80.0 - - - +
268F ARG* 1.3 60.4 + - - +
294F ARG* 3.8 36.6 + - - -
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Residues in contact with ARG 268 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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102E ASN* 3.8 3.4 + - - -
103E PRO* 3.5 19.6 - - - +
108E PHE* 3.4 33.9 - - - +
109E ASP 2.9 28.3 + - - +
112E GLU* 3.2 32.8 + - - +
113E ASP* 3.1 23.4 + - - +
114E GLU* 4.5 5.4 - - - +
264F ASN* 3.1 6.0 + - - +
265F TYR 2.8 5.1 + - - +
266F CYS* 3.4 20.8 + - + +
267F TYR* 1.3 83.6 - - - +
269F CYS* 1.3 67.8 + - - +
270F GLY* 2.9 6.1 + - - -
2Y LEU* 4.8 17.7 - - + -
7Y DAM 5.4 0.4 - - + -
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Residues in contact with CYS 269 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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243F LEU* 3.7 17.3 - - + -
245F MET* 3.9 16.3 - - - +
265F TYR* 2.9 46.0 + - + +
268F ARG* 1.3 73.5 - - - +
270F GLY* 1.3 60.5 + - - +
271F ASN* 3.4 3.5 + - - +
2Y LEU* 4.6 4.0 - - - -
7Y DAM 1.8 53.8 - - + -
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A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il